<template>
  <div>
        <!-- 面包屑导航区域 -->
  <el-breadcrumb separator-class="el-icon-arrow-right">
  <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
  <el-breadcrumb-item>权限管理</el-breadcrumb-item>
  <el-breadcrumb-item>用户列表</el-breadcrumb-item>
  </el-breadcrumb>
  <!-- 卡片式图 -->
  <el-card>
    <el-row>
      <el-col>
        <el-button type="primary" @click="RolesDialogVisible = true">
          添加角色
        </el-button>
      </el-col>
    </el-row>
    <!-- 角色列表区域 -->
    <el-table :data="rolelist" border stripe>
      <!-- 展开列 -->
      <el-table-column type="expand">
        <template slot-scope="scope">
          <el-row class="elrow" :class="['bdbottom','vcenter',index === 0 ? 'bdtop' : '']" v-for="(item1,index) in scope.row.children" :key="item1.id">
            <!-- 一级权限 -->
            <el-col :span="5">
              <el-tag closable @close="removeRightById(scope.row,item1.id)">{{item1.authName}}</el-tag>
              <i class="el-icon-caret-right"></i>
            </el-col>
            <!-- 二级权限 -->
            <el-col :span="19">
              <el-row v-for="(item2,index2) in item1.children" :key="item2.id"
              :class="['vcenter',index2 === 0 ? '' : 'bdtop']">
                <el-col :span="6">
                <el-tag type="success" closable @close="removeRightById(scope.row,item2.id)">{{item2.authName}}</el-tag>
                <i class="el-icon-caret-right"></i>
                </el-col>
                <!-- 三级权限 -->
                <el-col :span="18">
                  <el-tag type="warning" v-for="item3 in item2.children" :key="item3.id"
                  closable @close="removeRightById(scope.row,item3.id)">
                    {{item3.authName}}
                  </el-tag>
                </el-col>
              </el-row>
            </el-col>
          </el-row>
          <!-- <pre>{{scope.row}}</pre> -->
        </template>
      </el-table-column>
      <!-- 索引列 -->
      <el-table-column type="index"></el-table-column>
      <el-table-column label="角色名称" prop="roleName"></el-table-column>
      <el-table-column label="角色描述" prop="roleDesc"></el-table-column>
      <el-table-column label="操作" width="300px">
        <template slot-scope="scope">
          <el-button size="mini" type="primary" icon="el-icon-idet" @click="showDialogById(scope.row.id)">编辑</el-button>
          <el-button size="mini" type="danger" icon="el-icon-delete" @click="removeRolesById(scope.row.id)">删除</el-button>
          <el-button size="mini" type="warning" icon="el-icon-setting" @click="showSetRightDialog(scope.row)">分配权限</el-button>
        </template>
      </el-table-column>
    </el-table>
  </el-card>
  <!-- 添加角色对话框 -->
  <el-dialog
    title="添加角色"
    :visible.sync="RolesDialogVisible"
    width="50%"
    @close="addDialogClose">
    <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="79px">
  <el-form-item label="角色名称" prop="roleName">
    <el-input v-model="addForm.roleName"></el-input>
  </el-form-item>
   <el-form-item label="角色描述" prop="roleDesc">
    <el-input v-model="addForm.roleDesc"></el-input>
    </el-form-item>
  </el-form>
  <span slot="footer" class="dialog-footer">
    <el-button @click="RolesDialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="addRoles">确 定</el-button>
  </span>
</el-dialog>
  <!-- 修改角色对话框  -->
  <el-dialog
    title="修改角色"
    :visible.sync="editDialogVisible"
    width="50%">
    <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="79px">
  <el-form-item label="角色名称" prop="roleName">
    <el-input v-model="editForm.roleName"></el-input>
  </el-form-item>
   <el-form-item label="角色描述" prop="roleDesc">
    <el-input v-model="editForm.roleDesc"></el-input>
    </el-form-item>
  </el-form>
  <span slot="footer" class="dialog-footer">
    <el-button @click="editDialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="editRoles">确 定</el-button>
  </span>
</el-dialog>
  <!-- 分配权限对话框 -->
<el-dialog
  title="分配权限"
  :visible.sync="setRightDialogVisible"
  width="50%"
  @close="setRightDialogClosed">
  <!-- 树形控件 -->
  <el-tree :data="rightslist" :props="treeProps" show-checkbox node-key="id"
  default-expand-all :default-checked-keys="defKeys" ref="treeRef"></el-tree>
  <span slot="footer" class="dialog-footer">
    <el-button @click="setRightDialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="allotRights">确 定</el-button>
  </span>
</el-dialog>
  </div>
</template>

<script>
export default {
  data () {
    return {
      // 所有角色列表数据
      rolelist: [],
      // 所有权限数据
      rightslist: [],
      // 树形控件的属性绑定对象
      treeProps: {
        label: 'authName',
        children: 'children'
      },
      // 当前即将分配权限的角色id
      roleId: '',
      // 默认选中的节点ID值
      defKeys: [],
      RolesDialogVisible: false,
      editDialogVisible: false,
      setRightDialogVisible: false,
      addForm: {
        roleName: '',
        roleDesc: ''
      },
      addFormRules: {
        roleName: [
          { required: true, message: '请输入名称', trigger: 'blur' },
          { min: 2, max: 10, message: '用户名长度在2-10个字符之间', trigger: 'blur' }
        ]
      },
      editForm: [],
      editFormRules: {
        roleName: [
          { required: true, message: '请输入名称', trigger: 'blur' },
          { min: 2, max: 10, message: '用户名长度在2-10个字符之间', trigger: 'blur' }
        ]
      }
    }
  },
  created () {
    this.getRolesList()
  },
  methods: {
    async getRolesList () {
      const { data: res } = await this.$http.get('roles')
      if (res.meta.status !== 200) {
        return this.$message.error('获取角色列表失败')
      }
      this.rolelist = res.data
      // console.log(this.rolelist)
    },
    addRoles () {
      this.$refs.addFormRef.validate(async valid => {
        if (!valid) return
        const { data: res } = await this.$http.post('roles', this.addForm)
        if (res.status !== 201) {
          this.$message.error('创建用户失败')
        }
        this.$message.success('创建用户成功')
        this.RolesDialogVisible = false
        this.getRolesList()
      })
    },
    async showDialogById (id) {
      this.editDialogVisible = true
      const { data: res } = await this.$http.get('roles/' + id, id)
      if (res.meta.status !== 200) {
        return this.$message.error('获取用户数据失败')
      }
      this.editForm = res.data
      console.log(this.editForm)
    },
    editRoles () {
      this.$refs.editFormRef.validate(async valid => {
        if (!valid) return
        const { data: res } = await this.$http.put('roles/' + this.editForm.roleId,
          { roleName: this.editForm.roleName, roleDesc: this.editForm.roleDesc })
        if (res.meta.status !== 200) {
          return this.$message.error('修改用户失败')
        }
        this.editDialogVisible = false
        this.getRolesList()
        this.$message.success('修改用户成功!')
      })
    },
    async removeRolesById (id) {
      const confirmResult = await this.$confirm('此操作将永久删除该文件, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => err)
      if (confirmResult !== 'confirm') {
        return this.$message.error('已取消删除')
      }
      const { data: res } = await this.$http.delete('roles/' + id, id)
      if (res.meta.status !== 200) {
        return this.$message.error('删除用户失败')
      }
      this.$message.success('删除用户成功')
      this.getRolesList()
    },
    addDialogClose () {
      // 监听通知栏关闭事件 关闭了就清空表单
      this.$refs.addFormRef.resetFields()
    },
    // 根据id删除对应权限
    async removeRightById (roles, right) {
      // 弹框提示用户是否删除
      const confirmResult = await this.$confirm('此操作将永久删除该文件, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => err)
      if (confirmResult !== 'confirm') {
        return this.$message.info('已取消删除')
      }
      const { data: res } = await this.$http.delete(`roles/${roles.id}/rights/${right}`)
      if (res.meta.status !== 200) {
        return this.$message.error('删除权限失败!')
      }
      // 用这个方法会折叠
      // this.getRolesList()
      roles.children = res.data
    },
    // 展示分配权限的对话框
    async showSetRightDialog (role) {
      this.roleId = role.id
      // 获取所有权限的数据
      const { data: res } = await this.$http.get('rights/tree')
      if (res.meta.status !== 200) {
        return this.$message.error('获取权限失败')
      }
      // 把获取到的权限数据保存到data中
      this.rightslist = res.data
      console.log(this.rightslist)
      console.log(role)
      // 递归获取三级节点的id
      this.getLeftKeys(role, this.defKeys)
      this.setRightDialogVisible = true
    },
    // 递归获取角色下所有三级权限的id并保存到defKeys数组中
    getLeftKeys (node, arr) {
      if (!node.children) {
        return arr.push(node.id)
      }
      node.children.forEach(item => this.getLeftKeys(item, arr))
    },
    setRightDialogClosed () {
      this.defKeys = []
    },
    // 点击为角色分配角色
    async allotRights () {
      const keys = [
        ...this.$refs.treeRef.getCheckedKeys(),
        ...this.$refs.treeRef.getHalfCheckedKeys()
      ]
      const idStr = keys.join(',')
      const { data: res } = await this.$http.post(`roles/${this.roleId}/rights`, { rids: idStr })
      if (res.meta.status !== 200) {
        return this.$message.error('分配权限失败')
      }
      this.$message.success('分配权限成功')
      this.getRolesList()
      this.setRightDialogVisible = false
    }
  }
}
</script>

<style lang="less" scoped>
.el-tag{
  margin: 7px;
}
.bdtop{
  border-top: 1px solid #eee;
}
.bdbottom{
  border-bottom: 1px solid #eee;
}
.elrow{
  width: 900px;
  margin:0 auto;
}
.vcenter{
  display: flex;
  align-items: center;
}
</style>
